Subtract 70/18 from 70/7
1st number: 10 0/7, 2nd number: 3 16/18
70/7 - 70/18 is 55/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
70/7 = 70 × 18/7 × 18 = 1260/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
70/18 = 70 × 7/18 × 7 = 490/126 - Subtract the two like fractions:
1260/126 - 490/126 = 1260 - 490/126 = 770/126 - After reducing the fraction, the answer is 55/9
- In mixed form: 61/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/14-70/18 70/7-70/36 70/21-70/18 70/7-70/54 70/35-70/18 70/7-70/90 70/49-70/18